./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:53:20,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:53:20,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:53:21,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:53:21,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:53:21,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:53:21,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:53:21,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:53:21,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:53:21,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:53:21,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:53:21,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:53:21,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:53:21,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:53:21,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:53:21,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:53:21,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:53:21,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:53:21,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:53:21,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:53:21,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:53:21,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:53:21,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:53:21,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:53:21,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:53:21,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:53:21,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:53:21,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:53:21,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:53:21,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:53:21,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:53:21,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:53:21,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:53:21,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:53:21,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:53:21,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:53:21,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:53:21,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:53:21,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:53:21,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:53:21,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:53:21,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:53:21,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:53:21,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:53:21,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:53:21,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:53:21,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:53:21,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:53:21,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:53:21,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:53:21,077 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:53:21,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:53:21,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:53:21,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:53:21,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:53:21,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:53:21,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:53:21,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:53:21,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:53:21,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:53:21,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:53:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:53:21,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:53:21,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:53:21,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:53:21,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:53:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:53:21,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:53:21,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:53:21,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:53:21,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:53:21,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f [2021-12-16 00:53:21,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:53:21,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:53:21,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:53:21,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:53:21,282 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:53:21,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2021-12-16 00:53:21,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b50a945/fadfff54c9f34790a2c2f5ae47f19783/FLAG677115b31 [2021-12-16 00:53:21,704 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:53:21,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2021-12-16 00:53:21,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b50a945/fadfff54c9f34790a2c2f5ae47f19783/FLAG677115b31 [2021-12-16 00:53:22,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b50a945/fadfff54c9f34790a2c2f5ae47f19783 [2021-12-16 00:53:22,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:53:22,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:53:22,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:53:22,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:53:22,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:53:22,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cd885b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22, skipping insertion in model container [2021-12-16 00:53:22,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:53:22,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:53:22,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2021-12-16 00:53:22,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:53:22,559 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:53:22,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2021-12-16 00:53:22,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:53:22,647 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:53:22,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22 WrapperNode [2021-12-16 00:53:22,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:53:22,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:53:22,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:53:22,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:53:22,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,722 INFO L137 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 936 [2021-12-16 00:53:22,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:53:22,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:53:22,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:53:22,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:53:22,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:53:22,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:53:22,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:53:22,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:53:22,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (1/1) ... [2021-12-16 00:53:22,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:53:22,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:22,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 00:53:22,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 00:53:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-16 00:53:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-16 00:53:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-16 00:53:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-16 00:53:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-16 00:53:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-16 00:53:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:53:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:53:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:53:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:53:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-16 00:53:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-16 00:53:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:53:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:53:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-16 00:53:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-16 00:53:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-16 00:53:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-16 00:53:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:53:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:53:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:53:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-16 00:53:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-16 00:53:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:53:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:53:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:53:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-16 00:53:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-16 00:53:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-16 00:53:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-16 00:53:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:53:22,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:53:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:53:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:53:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:53:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:53:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-16 00:53:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-16 00:53:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:53:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:53:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-16 00:53:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-16 00:53:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:53:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:53:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:53:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:53:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:53:22,860 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:53:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:53:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:53:22,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:53:23,066 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:53:23,067 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:53:23,504 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:53:23,510 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:53:23,510 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:53:23,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:53:23 BoogieIcfgContainer [2021-12-16 00:53:23,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:53:23,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:53:23,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:53:23,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:53:23,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:53:22" (1/3) ... [2021-12-16 00:53:23,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da2e7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:53:23, skipping insertion in model container [2021-12-16 00:53:23,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:22" (2/3) ... [2021-12-16 00:53:23,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da2e7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:53:23, skipping insertion in model container [2021-12-16 00:53:23,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:53:23" (3/3) ... [2021-12-16 00:53:23,517 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.c [2021-12-16 00:53:23,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:53:23,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:53:23,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:53:23,554 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:53:23,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:53:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-16 00:53:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-16 00:53:23,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:23,581 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:23,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash -770456183, now seen corresponding path program 1 times [2021-12-16 00:53:23,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:23,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829563374] [2021-12-16 00:53:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:53:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:53:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:53:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:53:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:53:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:53:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:53:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:53:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:53:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:53:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:53:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:53:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:53:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:53:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:53:23,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829563374] [2021-12-16 00:53:23,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829563374] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669942006] [2021-12-16 00:53:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:23,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:23,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:23,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:53:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:53:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:53:24,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:53:24,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669942006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:24,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:53:24,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:53:24,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530483779] [2021-12-16 00:53:24,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:24,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:53:24,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:53:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:53:24,518 INFO L87 Difference]: Start difference. First operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:24,553 INFO L93 Difference]: Finished difference Result 550 states and 796 transitions. [2021-12-16 00:53:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:53:24,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2021-12-16 00:53:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:24,564 INFO L225 Difference]: With dead ends: 550 [2021-12-16 00:53:24,565 INFO L226 Difference]: Without dead ends: 345 [2021-12-16 00:53:24,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:53:24,582 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:24,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:53:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-16 00:53:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-12-16 00:53:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 266 states have (on average 1.5037593984962405) internal successors, (400), 269 states have internal predecessors, (400), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-16 00:53:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 509 transitions. [2021-12-16 00:53:24,653 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 509 transitions. Word has length 126 [2021-12-16 00:53:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:24,657 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 509 transitions. [2021-12-16 00:53:24,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 509 transitions. [2021-12-16 00:53:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-16 00:53:24,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:24,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:24,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 00:53:24,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 00:53:24,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -682131900, now seen corresponding path program 1 times [2021-12-16 00:53:24,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:24,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687225091] [2021-12-16 00:53:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:24,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:53:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:53:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:53:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:53:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:53:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:53:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:53:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:53:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:53:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:53:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:53:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:53:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:53:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:53:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:53:25,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:25,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687225091] [2021-12-16 00:53:25,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687225091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:25,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533467989] [2021-12-16 00:53:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:25,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:25,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:25,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:25,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:53:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:53:25,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:53:25,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:53:25,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533467989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:25,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:53:25,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:53:25,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13491093] [2021-12-16 00:53:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:25,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:53:25,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:53:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:53:25,516 INFO L87 Difference]: Start difference. First operand 345 states and 509 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:25,538 INFO L93 Difference]: Finished difference Result 540 states and 777 transitions. [2021-12-16 00:53:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:53:25,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2021-12-16 00:53:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:25,542 INFO L225 Difference]: With dead ends: 540 [2021-12-16 00:53:25,542 INFO L226 Difference]: Without dead ends: 348 [2021-12-16 00:53:25,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:53:25,544 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:25,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1012 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:53:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-12-16 00:53:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2021-12-16 00:53:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.5) internal successors, (402), 271 states have internal predecessors, (402), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-16 00:53:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2021-12-16 00:53:25,562 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 127 [2021-12-16 00:53:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:25,565 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2021-12-16 00:53:25,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2021-12-16 00:53:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 00:53:25,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:25,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:25,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:53:25,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 00:53:25,770 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash -744377666, now seen corresponding path program 1 times [2021-12-16 00:53:25,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151429095] [2021-12-16 00:53:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:25,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:53:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:53:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:53:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:53:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:53:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:53:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:53:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:53:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:53:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:53:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:53:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:53:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:53:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:53:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:53:25,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:25,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151429095] [2021-12-16 00:53:25,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151429095] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291459354] [2021-12-16 00:53:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:25,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:25,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:25,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:53:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:53:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:53:26,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:53:26,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291459354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:26,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:53:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:53:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113221909] [2021-12-16 00:53:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:26,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:53:26,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:53:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:53:26,286 INFO L87 Difference]: Start difference. First operand 347 states and 511 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:26,305 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2021-12-16 00:53:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:53:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2021-12-16 00:53:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:26,308 INFO L225 Difference]: With dead ends: 724 [2021-12-16 00:53:26,308 INFO L226 Difference]: Without dead ends: 404 [2021-12-16 00:53:26,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:53:26,310 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 107 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:26,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 988 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:53:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-16 00:53:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2021-12-16 00:53:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 309 states have internal predecessors, (464), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 00:53:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 595 transitions. [2021-12-16 00:53:26,327 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 595 transitions. Word has length 136 [2021-12-16 00:53:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:26,327 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 595 transitions. [2021-12-16 00:53:26,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 595 transitions. [2021-12-16 00:53:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 00:53:26,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:26,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:26,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-16 00:53:26,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:26,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1790455273, now seen corresponding path program 1 times [2021-12-16 00:53:26,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:26,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960250051] [2021-12-16 00:53:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:26,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:53:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:53:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:53:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:53:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:53:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:53:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:53:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:53:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:53:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:53:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:53:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:53:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:53:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:53:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:53:26,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:26,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960250051] [2021-12-16 00:53:26,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960250051] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:26,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634353000] [2021-12-16 00:53:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:26,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:26,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:26,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:53:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:26,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:53:26,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:53:27,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:53:27,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634353000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:27,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:53:27,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:53:27,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437259750] [2021-12-16 00:53:27,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:27,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:53:27,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:53:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:53:27,035 INFO L87 Difference]: Start difference. First operand 396 states and 595 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:27,100 INFO L93 Difference]: Finished difference Result 783 states and 1180 transitions. [2021-12-16 00:53:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:53:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2021-12-16 00:53:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:27,105 INFO L225 Difference]: With dead ends: 783 [2021-12-16 00:53:27,105 INFO L226 Difference]: Without dead ends: 398 [2021-12-16 00:53:27,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:27,109 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 125 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:27,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1856 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:53:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-16 00:53:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-12-16 00:53:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 311 states have internal predecessors, (465), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2021-12-16 00:53:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 598 transitions. [2021-12-16 00:53:27,136 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 598 transitions. Word has length 137 [2021-12-16 00:53:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:27,136 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 598 transitions. [2021-12-16 00:53:27,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 598 transitions. [2021-12-16 00:53:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-16 00:53:27,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:27,140 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:27,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 00:53:27,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:27,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1336008698, now seen corresponding path program 1 times [2021-12-16 00:53:27,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:27,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159142354] [2021-12-16 00:53:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:27,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:53:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:53:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:53:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:53:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:53:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:53:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:53:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:53:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:53:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:53:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:53:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:53:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:53:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:53:27,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159142354] [2021-12-16 00:53:27,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159142354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853835784] [2021-12-16 00:53:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:27,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:27,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:27,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:53:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:27,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:53:27,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:53:27,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:53:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853835784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:27,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:53:27,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:53:27,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048323669] [2021-12-16 00:53:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:27,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:53:27,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:53:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:53:27,860 INFO L87 Difference]: Start difference. First operand 398 states and 598 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:27,924 INFO L93 Difference]: Finished difference Result 785 states and 1185 transitions. [2021-12-16 00:53:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:53:27,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2021-12-16 00:53:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:27,927 INFO L225 Difference]: With dead ends: 785 [2021-12-16 00:53:27,927 INFO L226 Difference]: Without dead ends: 400 [2021-12-16 00:53:27,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:53:27,928 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 124 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:27,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1845 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:53:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-16 00:53:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-12-16 00:53:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2021-12-16 00:53:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 604 transitions. [2021-12-16 00:53:27,946 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 604 transitions. Word has length 138 [2021-12-16 00:53:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:27,946 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 604 transitions. [2021-12-16 00:53:27,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 604 transitions. [2021-12-16 00:53:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 00:53:27,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:27,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:27,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:53:28,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:28,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1833577272, now seen corresponding path program 1 times [2021-12-16 00:53:28,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:28,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442041242] [2021-12-16 00:53:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:28,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:53:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:53:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:53:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:53:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:53:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:53:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:53:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:53:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:53:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:53:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:53:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:53:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:53:28,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442041242] [2021-12-16 00:53:28,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442041242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:28,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:28,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:53:28,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244809226] [2021-12-16 00:53:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:28,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:53:28,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:53:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:53:28,277 INFO L87 Difference]: Start difference. First operand 400 states and 604 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:29,326 INFO L93 Difference]: Finished difference Result 897 states and 1356 transitions. [2021-12-16 00:53:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:53:29,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2021-12-16 00:53:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:29,331 INFO L225 Difference]: With dead ends: 897 [2021-12-16 00:53:29,332 INFO L226 Difference]: Without dead ends: 520 [2021-12-16 00:53:29,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:53:29,335 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1227 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:29,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1620 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:53:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-12-16 00:53:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2021-12-16 00:53:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2021-12-16 00:53:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 603 transitions. [2021-12-16 00:53:29,360 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 603 transitions. Word has length 139 [2021-12-16 00:53:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:29,360 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 603 transitions. [2021-12-16 00:53:29,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 603 transitions. [2021-12-16 00:53:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 00:53:29,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:29,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:29,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:53:29,362 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash -292483447, now seen corresponding path program 2 times [2021-12-16 00:53:29,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387096008] [2021-12-16 00:53:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:29,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:53:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:53:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:53:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:53:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:53:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:53:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:53:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:53:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:53:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:53:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:53:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:53:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:53:29,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:29,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387096008] [2021-12-16 00:53:29,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387096008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:29,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:29,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:53:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262688824] [2021-12-16 00:53:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:29,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:53:29,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:53:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:53:29,474 INFO L87 Difference]: Start difference. First operand 400 states and 603 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:30,672 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2021-12-16 00:53:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:53:30,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2021-12-16 00:53:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:30,675 INFO L225 Difference]: With dead ends: 899 [2021-12-16 00:53:30,675 INFO L226 Difference]: Without dead ends: 522 [2021-12-16 00:53:30,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:53:30,676 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1223 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:30,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 1616 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:53:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-16 00:53:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2021-12-16 00:53:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2021-12-16 00:53:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2021-12-16 00:53:30,698 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 140 [2021-12-16 00:53:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:30,699 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2021-12-16 00:53:30,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2021-12-16 00:53:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 00:53:30,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:30,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:30,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:53:30,701 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 651330031, now seen corresponding path program 1 times [2021-12-16 00:53:30,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388591099] [2021-12-16 00:53:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:30,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:53:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:53:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:53:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:53:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:53:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:53:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:53:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:53:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:53:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:53:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:53:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:53:30,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388591099] [2021-12-16 00:53:30,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388591099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:30,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:30,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:53:30,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165623433] [2021-12-16 00:53:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:30,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:53:30,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:53:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:53:30,790 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:32,012 INFO L93 Difference]: Finished difference Result 899 states and 1358 transitions. [2021-12-16 00:53:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 00:53:32,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2021-12-16 00:53:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:32,015 INFO L225 Difference]: With dead ends: 899 [2021-12-16 00:53:32,015 INFO L226 Difference]: Without dead ends: 522 [2021-12-16 00:53:32,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-16 00:53:32,016 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1223 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:32,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 1626 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 00:53:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-16 00:53:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2021-12-16 00:53:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2021-12-16 00:53:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2021-12-16 00:53:32,030 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 141 [2021-12-16 00:53:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:32,031 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2021-12-16 00:53:32,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 00:53:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2021-12-16 00:53:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 00:53:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:32,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:32,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:53:32,034 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 532888557, now seen corresponding path program 1 times [2021-12-16 00:53:32,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700697911] [2021-12-16 00:53:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:32,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:53:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:53:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:53:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:53:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:53:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:53:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:53:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:53:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:53:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:53:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:53:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:53:32,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700697911] [2021-12-16 00:53:32,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700697911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:32,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:32,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:53:32,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270694920] [2021-12-16 00:53:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:32,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:53:32,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:53:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:53:32,149 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 00:53:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:33,737 INFO L93 Difference]: Finished difference Result 897 states and 1353 transitions. [2021-12-16 00:53:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:53:33,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 141 [2021-12-16 00:53:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:33,741 INFO L225 Difference]: With dead ends: 897 [2021-12-16 00:53:33,741 INFO L226 Difference]: Without dead ends: 522 [2021-12-16 00:53:33,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:53:33,744 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1333 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:33,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 2103 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 00:53:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-16 00:53:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2021-12-16 00:53:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2021-12-16 00:53:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 605 transitions. [2021-12-16 00:53:33,771 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 605 transitions. Word has length 141 [2021-12-16 00:53:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:33,772 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 605 transitions. [2021-12-16 00:53:33,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 00:53:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 605 transitions. [2021-12-16 00:53:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-16 00:53:33,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:33,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:33,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:53:33,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 551571089, now seen corresponding path program 2 times [2021-12-16 00:53:33,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:33,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274664019] [2021-12-16 00:53:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:33,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:53:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:53:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:53:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:53:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:53:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:53:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:53:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:53:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:53:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:53:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:53:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:53:33,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274664019] [2021-12-16 00:53:33,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274664019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:33,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:33,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:53:33,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90552232] [2021-12-16 00:53:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:33,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:53:33,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:53:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:53:33,901 INFO L87 Difference]: Start difference. First operand 402 states and 605 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 00:53:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:35,436 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2021-12-16 00:53:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:53:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2021-12-16 00:53:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:35,439 INFO L225 Difference]: With dead ends: 899 [2021-12-16 00:53:35,439 INFO L226 Difference]: Without dead ends: 524 [2021-12-16 00:53:35,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:53:35,441 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1330 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:35,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2096 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 00:53:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-12-16 00:53:35,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 404. [2021-12-16 00:53:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 310 states have (on average 1.5096774193548388) internal successors, (468), 317 states have internal predecessors, (468), 66 states have call successors, (66), 23 states have call predecessors, (66), 27 states have return successors, (77), 65 states have call predecessors, (77), 65 states have call successors, (77) [2021-12-16 00:53:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 611 transitions. [2021-12-16 00:53:35,460 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 611 transitions. Word has length 142 [2021-12-16 00:53:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:35,460 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 611 transitions. [2021-12-16 00:53:35,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 00:53:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 611 transitions. [2021-12-16 00:53:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 00:53:35,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:35,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:35,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 00:53:35,462 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash -586635470, now seen corresponding path program 1 times [2021-12-16 00:53:35,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:35,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085759627] [2021-12-16 00:53:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:35,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:53:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:53:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:53:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:53:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:53:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:53:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:53:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:53:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:53:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:53:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 00:53:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-16 00:53:35,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:35,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085759627] [2021-12-16 00:53:35,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085759627] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:53:35,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585780626] [2021-12-16 00:53:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:35,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:53:35,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:53:35,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:53:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:35,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:53:35,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:53:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:35,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:53:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:36,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585780626] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:53:36,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:53:36,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-16 00:53:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467853635] [2021-12-16 00:53:36,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:53:36,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 00:53:36,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 00:53:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:53:36,203 INFO L87 Difference]: Start difference. First operand 404 states and 611 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-16 00:53:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:38,929 INFO L93 Difference]: Finished difference Result 1578 states and 2587 transitions. [2021-12-16 00:53:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 00:53:38,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 143 [2021-12-16 00:53:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:38,936 INFO L225 Difference]: With dead ends: 1578 [2021-12-16 00:53:38,936 INFO L226 Difference]: Without dead ends: 1205 [2021-12-16 00:53:38,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-16 00:53:38,939 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 3032 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 6025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:38,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 3730 Invalid, 6025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1146 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 00:53:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-12-16 00:53:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 732. [2021-12-16 00:53:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 574 states have (on average 1.5662020905923344) internal successors, (899), 581 states have internal predecessors, (899), 130 states have call successors, (130), 23 states have call predecessors, (130), 27 states have return successors, (151), 129 states have call predecessors, (151), 129 states have call successors, (151) [2021-12-16 00:53:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1180 transitions. [2021-12-16 00:53:38,974 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1180 transitions. Word has length 143 [2021-12-16 00:53:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:38,975 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1180 transitions. [2021-12-16 00:53:38,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-16 00:53:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1180 transitions. [2021-12-16 00:53:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 00:53:38,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:38,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:38,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:53:39,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:53:39,191 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1282197014, now seen corresponding path program 1 times [2021-12-16 00:53:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:39,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748754043] [2021-12-16 00:53:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:39,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:53:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:53:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:53:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:53:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:53:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:53:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:53:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:53:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:53:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:53:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 00:53:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:39,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748754043] [2021-12-16 00:53:39,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748754043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:39,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573953979] [2021-12-16 00:53:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:39,277 INFO L87 Difference]: Start difference. First operand 732 states and 1180 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:40,185 INFO L93 Difference]: Finished difference Result 1814 states and 2990 transitions. [2021-12-16 00:53:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2021-12-16 00:53:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:40,191 INFO L225 Difference]: With dead ends: 1814 [2021-12-16 00:53:40,191 INFO L226 Difference]: Without dead ends: 1160 [2021-12-16 00:53:40,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:40,193 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1216 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:40,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 1385 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-12-16 00:53:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1032. [2021-12-16 00:53:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 810 states have (on average 1.5851851851851853) internal successors, (1284), 817 states have internal predecessors, (1284), 194 states have call successors, (194), 23 states have call predecessors, (194), 27 states have return successors, (225), 193 states have call predecessors, (225), 193 states have call successors, (225) [2021-12-16 00:53:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1703 transitions. [2021-12-16 00:53:40,248 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1703 transitions. Word has length 146 [2021-12-16 00:53:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:40,249 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 1703 transitions. [2021-12-16 00:53:40,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1703 transitions. [2021-12-16 00:53:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 00:53:40,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:40,253 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:40,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:53:40,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:40,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:40,254 INFO L85 PathProgramCache]: Analyzing trace with hash -860530826, now seen corresponding path program 1 times [2021-12-16 00:53:40,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:40,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023559963] [2021-12-16 00:53:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:40,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:53:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:53:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:53:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:53:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:53:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:53:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:53:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:53:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:53:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:53:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:53:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:40,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023559963] [2021-12-16 00:53:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023559963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:40,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:40,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:40,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80262123] [2021-12-16 00:53:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:40,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:40,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:40,344 INFO L87 Difference]: Start difference. First operand 1032 states and 1703 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:41,298 INFO L93 Difference]: Finished difference Result 2554 states and 4270 transitions. [2021-12-16 00:53:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2021-12-16 00:53:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:41,308 INFO L225 Difference]: With dead ends: 2554 [2021-12-16 00:53:41,308 INFO L226 Difference]: Without dead ends: 1653 [2021-12-16 00:53:41,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:41,311 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1215 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:41,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 1359 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-12-16 00:53:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1525. [2021-12-16 00:53:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1208 states have (on average 1.5943708609271523) internal successors, (1926), 1215 states have internal predecessors, (1926), 289 states have call successors, (289), 23 states have call predecessors, (289), 27 states have return successors, (320), 288 states have call predecessors, (320), 288 states have call successors, (320) [2021-12-16 00:53:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2535 transitions. [2021-12-16 00:53:41,369 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2535 transitions. Word has length 147 [2021-12-16 00:53:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:41,369 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 2535 transitions. [2021-12-16 00:53:41,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2535 transitions. [2021-12-16 00:53:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 00:53:41,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:41,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:41,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:53:41,375 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1641850148, now seen corresponding path program 1 times [2021-12-16 00:53:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:41,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591853756] [2021-12-16 00:53:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:41,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:53:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:53:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:53:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:53:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:53:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:53:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:53:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:53:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:53:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:53:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:53:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:41,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:41,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591853756] [2021-12-16 00:53:41,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591853756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:41,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:41,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:41,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560232994] [2021-12-16 00:53:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:41,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:41,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:41,457 INFO L87 Difference]: Start difference. First operand 1525 states and 2535 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:42,437 INFO L93 Difference]: Finished difference Result 3656 states and 6188 transitions. [2021-12-16 00:53:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2021-12-16 00:53:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:42,447 INFO L225 Difference]: With dead ends: 3656 [2021-12-16 00:53:42,448 INFO L226 Difference]: Without dead ends: 2397 [2021-12-16 00:53:42,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:42,452 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1211 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:42,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1334 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-12-16 00:53:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2269. [2021-12-16 00:53:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1829 states have (on average 1.6014215418261346) internal successors, (2929), 1836 states have internal predecessors, (2929), 412 states have call successors, (412), 23 states have call predecessors, (412), 27 states have return successors, (459), 411 states have call predecessors, (459), 411 states have call successors, (459) [2021-12-16 00:53:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3800 transitions. [2021-12-16 00:53:42,553 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3800 transitions. Word has length 148 [2021-12-16 00:53:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:42,554 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 3800 transitions. [2021-12-16 00:53:42,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3800 transitions. [2021-12-16 00:53:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 00:53:42,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:42,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:42,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:53:42,590 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1267394251, now seen corresponding path program 1 times [2021-12-16 00:53:42,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:42,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864281322] [2021-12-16 00:53:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:42,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:53:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:53:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:53:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:53:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:53:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:53:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:53:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:53:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:53:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 00:53:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 00:53:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:42,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864281322] [2021-12-16 00:53:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864281322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:42,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:42,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:42,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901689573] [2021-12-16 00:53:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:42,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:42,673 INFO L87 Difference]: Start difference. First operand 2269 states and 3800 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:43,635 INFO L93 Difference]: Finished difference Result 5365 states and 9168 transitions. [2021-12-16 00:53:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:43,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2021-12-16 00:53:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:43,651 INFO L225 Difference]: With dead ends: 5365 [2021-12-16 00:53:43,652 INFO L226 Difference]: Without dead ends: 3581 [2021-12-16 00:53:43,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:43,658 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1209 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:43,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1334 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2021-12-16 00:53:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3453. [2021-12-16 00:53:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 2834 states have (on average 1.6058574453069865) internal successors, (4551), 2841 states have internal predecessors, (4551), 591 states have call successors, (591), 23 states have call predecessors, (591), 27 states have return successors, (664), 590 states have call predecessors, (664), 590 states have call successors, (664) [2021-12-16 00:53:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5806 transitions. [2021-12-16 00:53:43,818 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5806 transitions. Word has length 149 [2021-12-16 00:53:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:43,818 INFO L470 AbstractCegarLoop]: Abstraction has 3453 states and 5806 transitions. [2021-12-16 00:53:43,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5806 transitions. [2021-12-16 00:53:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-16 00:53:43,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:43,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:43,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:53:43,830 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 187518816, now seen corresponding path program 1 times [2021-12-16 00:53:43,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:43,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379216549] [2021-12-16 00:53:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:43,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:53:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:53:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:53:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:53:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:53:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:53:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:53:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:53:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:53:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 00:53:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 00:53:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:43,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:43,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379216549] [2021-12-16 00:53:43,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379216549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:43,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:43,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:43,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836178299] [2021-12-16 00:53:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:43,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:43,907 INFO L87 Difference]: Start difference. First operand 3453 states and 5806 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:44,949 INFO L93 Difference]: Finished difference Result 8438 states and 14484 transitions. [2021-12-16 00:53:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2021-12-16 00:53:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:44,972 INFO L225 Difference]: With dead ends: 8438 [2021-12-16 00:53:44,972 INFO L226 Difference]: Without dead ends: 5722 [2021-12-16 00:53:44,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:44,980 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 1209 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:44,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 1378 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2021-12-16 00:53:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5594. [2021-12-16 00:53:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 4599 states have (on average 1.599695585996956) internal successors, (7357), 4606 states have internal predecessors, (7357), 967 states have call successors, (967), 23 states have call predecessors, (967), 27 states have return successors, (1084), 966 states have call predecessors, (1084), 966 states have call successors, (1084) [2021-12-16 00:53:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 9408 transitions. [2021-12-16 00:53:45,291 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 9408 transitions. Word has length 150 [2021-12-16 00:53:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:45,292 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 9408 transitions. [2021-12-16 00:53:45,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 9408 transitions. [2021-12-16 00:53:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 00:53:45,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:45,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:45,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:53:45,310 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash -758318927, now seen corresponding path program 1 times [2021-12-16 00:53:45,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:45,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644841171] [2021-12-16 00:53:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:45,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:53:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:53:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:53:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:53:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:53:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:53:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:53:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:53:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:53:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 00:53:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 00:53:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:45,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:45,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644841171] [2021-12-16 00:53:45,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644841171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:45,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:45,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:45,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789314086] [2021-12-16 00:53:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:45,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:45,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:45,394 INFO L87 Difference]: Start difference. First operand 5594 states and 9408 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:46,544 INFO L93 Difference]: Finished difference Result 13860 states and 23785 transitions. [2021-12-16 00:53:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-16 00:53:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:46,608 INFO L225 Difference]: With dead ends: 13860 [2021-12-16 00:53:46,608 INFO L226 Difference]: Without dead ends: 9405 [2021-12-16 00:53:46,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:46,620 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1208 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:46,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1346 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2021-12-16 00:53:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9277. [2021-12-16 00:53:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7676 states have (on average 1.5977071391349662) internal successors, (12264), 7683 states have internal predecessors, (12264), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 27 states have return successors, (1768), 1572 states have call predecessors, (1768), 1572 states have call successors, (1768) [2021-12-16 00:53:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 15605 transitions. [2021-12-16 00:53:47,115 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 15605 transitions. Word has length 151 [2021-12-16 00:53:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:47,116 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 15605 transitions. [2021-12-16 00:53:47,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 15605 transitions. [2021-12-16 00:53:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-16 00:53:47,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:47,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:47,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:53:47,142 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1404498466, now seen corresponding path program 1 times [2021-12-16 00:53:47,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:47,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130401261] [2021-12-16 00:53:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:47,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:53:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:53:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:53:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:53:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:53:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:53:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:53:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:53:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:53:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 00:53:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 00:53:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130401261] [2021-12-16 00:53:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130401261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:47,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:47,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:47,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277998451] [2021-12-16 00:53:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:47,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:47,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:47,221 INFO L87 Difference]: Start difference. First operand 9277 states and 15605 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:48,589 INFO L93 Difference]: Finished difference Result 24044 states and 41226 transitions. [2021-12-16 00:53:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2021-12-16 00:53:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:48,642 INFO L225 Difference]: With dead ends: 24044 [2021-12-16 00:53:48,642 INFO L226 Difference]: Without dead ends: 16358 [2021-12-16 00:53:48,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:48,667 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1204 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:48,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 1363 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 00:53:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16358 states. [2021-12-16 00:53:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16358 to 16230. [2021-12-16 00:53:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16230 states, 13426 states have (on average 1.5890064054819009) internal successors, (21334), 13433 states have internal predecessors, (21334), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 27 states have return successors, (3115), 2775 states have call predecessors, (3115), 2775 states have call successors, (3115) [2021-12-16 00:53:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 27225 transitions. [2021-12-16 00:53:49,523 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 27225 transitions. Word has length 152 [2021-12-16 00:53:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:49,530 INFO L470 AbstractCegarLoop]: Abstraction has 16230 states and 27225 transitions. [2021-12-16 00:53:49,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 27225 transitions. [2021-12-16 00:53:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-16 00:53:49,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:49,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:49,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:53:49,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1896303312, now seen corresponding path program 1 times [2021-12-16 00:53:49,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:49,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215917129] [2021-12-16 00:53:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:49,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:53:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:53:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:53:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:53:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:53:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:53:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:53:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:53:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:53:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 00:53:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 00:53:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:49,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215917129] [2021-12-16 00:53:49,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215917129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:49,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:49,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:49,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652211216] [2021-12-16 00:53:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:49,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:49,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:49,681 INFO L87 Difference]: Start difference. First operand 16230 states and 27225 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:51,575 INFO L93 Difference]: Finished difference Result 43010 states and 73623 transitions. [2021-12-16 00:53:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:51,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2021-12-16 00:53:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:51,671 INFO L225 Difference]: With dead ends: 43010 [2021-12-16 00:53:51,672 INFO L226 Difference]: Without dead ends: 29013 [2021-12-16 00:53:51,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:51,700 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 1204 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:51,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 1329 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:53:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29013 states. [2021-12-16 00:53:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29013 to 28885. [2021-12-16 00:53:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28885 states, 24042 states have (on average 1.5847683221029865) internal successors, (38101), 24049 states have internal predecessors, (38101), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 27 states have return successors, (5428), 4814 states have call predecessors, (5428), 4814 states have call successors, (5428) [2021-12-16 00:53:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28885 states to 28885 states and 48344 transitions. [2021-12-16 00:53:53,248 INFO L78 Accepts]: Start accepts. Automaton has 28885 states and 48344 transitions. Word has length 153 [2021-12-16 00:53:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:53,249 INFO L470 AbstractCegarLoop]: Abstraction has 28885 states and 48344 transitions. [2021-12-16 00:53:53,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28885 states and 48344 transitions. [2021-12-16 00:53:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-16 00:53:53,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:53,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:53,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:53:53,289 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2012004348, now seen corresponding path program 1 times [2021-12-16 00:53:53,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:53,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652527441] [2021-12-16 00:53:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:53,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:53:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:53:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:53:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:53:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:53:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:53:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:53:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:53:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:53:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 00:53:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 00:53:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:53,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652527441] [2021-12-16 00:53:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652527441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565624966] [2021-12-16 00:53:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:53,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:53,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:53,376 INFO L87 Difference]: Start difference. First operand 28885 states and 48344 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:56,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:53:56,018 INFO L93 Difference]: Finished difference Result 78772 states and 133987 transitions. [2021-12-16 00:53:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:53:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-12-16 00:53:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:53:56,215 INFO L225 Difference]: With dead ends: 78772 [2021-12-16 00:53:56,216 INFO L226 Difference]: Without dead ends: 52892 [2021-12-16 00:53:56,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:53:56,277 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1199 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:53:56,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1338 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:53:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52892 states. [2021-12-16 00:53:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52892 to 52764. [2021-12-16 00:53:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52764 states, 44206 states have (on average 1.5790616658372167) internal successors, (69804), 44213 states have internal predecessors, (69804), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 27 states have return successors, (9675), 8529 states have call predecessors, (9675), 8529 states have call successors, (9675) [2021-12-16 00:53:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52764 states to 52764 states and 88009 transitions. [2021-12-16 00:53:59,085 INFO L78 Accepts]: Start accepts. Automaton has 52764 states and 88009 transitions. Word has length 154 [2021-12-16 00:53:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:53:59,085 INFO L470 AbstractCegarLoop]: Abstraction has 52764 states and 88009 transitions. [2021-12-16 00:53:59,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:53:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 52764 states and 88009 transitions. [2021-12-16 00:53:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 00:53:59,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:53:59,143 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:53:59,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 00:53:59,144 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:53:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:53:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash 897281520, now seen corresponding path program 1 times [2021-12-16 00:53:59,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:53:59,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359403157] [2021-12-16 00:53:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:53:59,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:53:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:53:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:53:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:53:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:53:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:53:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:53:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:53:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:53:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:53:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:53:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:53:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:53:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:53:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:53:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 00:53:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 00:53:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 00:53:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:53:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:53:59,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:53:59,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359403157] [2021-12-16 00:53:59,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359403157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:53:59,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:53:59,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:53:59,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181150649] [2021-12-16 00:53:59,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:53:59,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:53:59,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:53:59,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:53:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:53:59,237 INFO L87 Difference]: Start difference. First operand 52764 states and 88009 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:54:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:54:03,451 INFO L93 Difference]: Finished difference Result 98543 states and 167917 transitions. [2021-12-16 00:54:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:54:03,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-16 00:54:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:54:03,817 INFO L225 Difference]: With dead ends: 98543 [2021-12-16 00:54:03,817 INFO L226 Difference]: Without dead ends: 98351 [2021-12-16 00:54:03,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:54:03,868 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1199 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:54:03,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 1331 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:54:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98351 states. [2021-12-16 00:54:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98351 to 98223. [2021-12-16 00:54:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98223 states, 82866 states have (on average 1.5718268047208748) internal successors, (130251), 82873 states have internal predecessors, (130251), 15329 states have call successors, (15329), 23 states have call predecessors, (15329), 27 states have return successors, (17520), 15328 states have call predecessors, (17520), 15328 states have call successors, (17520) [2021-12-16 00:54:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98223 states to 98223 states and 163100 transitions. [2021-12-16 00:54:08,736 INFO L78 Accepts]: Start accepts. Automaton has 98223 states and 163100 transitions. Word has length 155 [2021-12-16 00:54:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:54:08,736 INFO L470 AbstractCegarLoop]: Abstraction has 98223 states and 163100 transitions. [2021-12-16 00:54:08,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 00:54:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 98223 states and 163100 transitions. [2021-12-16 00:54:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 00:54:09,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:54:09,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:54:09,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 00:54:09,180 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:54:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:54:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 309541469, now seen corresponding path program 1 times [2021-12-16 00:54:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:54:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414211865] [2021-12-16 00:54:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:54:09,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:54:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:54:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:54:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:54:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:54:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:54:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:54:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:54:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:54:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:54:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:54:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:54:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:54:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:54:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:54:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 00:54:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 00:54:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 00:54:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:54:09,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:54:09,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414211865] [2021-12-16 00:54:09,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414211865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:54:09,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80768760] [2021-12-16 00:54:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:54:09,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:54:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:54:09,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:54:09,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 00:54:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:54:09,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 00:54:09,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:54:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-16 00:54:09,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:54:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-16 00:54:10,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80768760] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:54:10,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:54:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-16 00:54:10,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786270455] [2021-12-16 00:54:10,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:54:10,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 00:54:10,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:54:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 00:54:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2021-12-16 00:54:10,377 INFO L87 Difference]: Start difference. First operand 98223 states and 163100 transitions. Second operand has 32 states, 30 states have (on average 8.466666666666667) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44)